Question

我们在尝试将hibernate从3.5.6迁移到3.6.10时遇到问题。我们正在使用hbm.xml配置文件。以下是标准：

public List<Cat> findCats(Com com) {

    DetachedCriteria criteria = DetachedCriteria.forClass(Occupe.class);
    criteria.add(Restrictions.eq("com", com));
    criteria.add(Restrictions.or(Restrictions.isNull("datLibPt"),
            Restrictions.gt("datLibPt", Calendar.getInstance().getTime())));
    criteria.add(Restrictions.isNull("delDate"));
    criteria.createAlias("cat", "cat");
    criteria.add(Restrictions.isNull("cat.delDate"));
    criteria.addOrder(Order.asc("cat.csv"));
    criteria.setProjection(Projections.property("cat"));

    return findByCriteria(criteria);
}

使用Hibernate 3.5.6，它会生成以下查询：

Hibernate: select this_.TRA_ID as y0_ from mydb..OCCUPE this_ 
inner join mydb..CAT cat1_ on this_.TRA_ID=cat1_.TRA_ID where this_.COM_ID=? and (this_.OCC_DAT_LIB_FCT is null or this_.OCC_DAT_LIB_FCT>?) and this_.DELDATE is null and cat1_.DELDATE is null order by cat1_.TRA_CSV asc

使用Hibernate 3.6.10，它会生成以下查询：

select this_.TRA_ID as y0_ from mydb..OCCUPE this_ 
inner join mydb..CAT cat1_ on this_.TRA_ID=cat1_.TRA_ID 
inner join mydb..CAT cat1_ on this_.TRA_ID=cat1_.TRA_ID where this_.COM_ID=? and (this_.OCC_DAT_LIB_FCT is null or this_.OCC_DAT_LIB_FCT>?) and this_.DELDATE is null and cat1_.DELDATE is null order by cat1_.TRA_CSV asc

由于（逻辑）错误com.sybase.jdbc3.jdbc.SybSQLException: Tables 'mydb..CAT' and 'mydb..CAT' have same exposed names.

而失败

除了重复的内部连接语句之外，3.6.10查询与3.5.6查询严格相似。我试图理解这种奇怪的行为。我想我将使用HQL请求，但如果您有任何提示，请不要犹豫，评论;）

Hibernate生成不需要的join子句并失败（从3.5.6迁移到3.6.10）

0 个答案: